BACKGROUND: Anesthesia and surgery can lead to major distress for children. Sedative premedication and preoperative preparation techniques are available to reduce preoperative anxiety in children. We aimed to assess the effect of informational video based on role-play modelling on preoperative anxiety and postoperative behavior changes in children undergoing surgery.METHODS: Forty-two children aged 5-12 years, with American Society of Anesthesiologist physical status I-II, scheduled for elective outpatient surgery, were enrolled in this study. Patients were randomly allocated to one group with or without information video presentation. In group V, patients watched the information video (N.=21). Other children were verbally informed in a standard care (group C, N.=21). We recorded patient’s demographics (age, birth order, surgery time, surgery type, history of previous surgery, parent’s age, parental working status, parental education level), the preoperative anxiety level using Modified Yale Preoperative Anxiety Scale (MYPAS) and at 1 week after discharge, new developing postoperative maladaptive behaviors (POMB) using the Post Hospitalization Behavioral Questionnaire by telephone interview.RESULTS: Patient’s demographics were similar in both groups. Total MYPAS scores were found to be lower in group V as compared to group C P=0.0001). Difficulty getting to sleep, nocturnal enuresis, fear of dark, to object to go to bed at night and decreased appetite of new developing POMB were found to be lower in group V than group C. We also found a correlation between anxiety scores and POMB.CONCLUSIONS: The presentation of an informational video based on model making reduces preoperative anxiety at the time of placement of the facemask and postoperative negative behavioral changes in children.